Leaking CL500 Power Pump

[eric242340]

There is no way of checking for fluid leaks by using a diagnostic code readout, it has to be done by eye. But the flat battery bit is the interesting point. I think you have just answered your own question. A flat battery will store many fault codes on all computers and play silly beggars with warning lights ect. Change the battery first and take it from there.

 

[The Sat Diver]

Can you tell me what EIS and Rodeo is please... and it looks as if I am going to have to install a seperate socket too then if it is only live on key 1

At least you have confirmed now why the battery is running down although I had guessed it had to be electronic wizardry

But geting back to my original thread... i'm still not convinced it isn't this weeping hydraulic hose I can see... this stuff is running at some 200bar so i'm led to believe and I know from the complicated hydraulic systems we run for the diving spread a weep can cause all sorts of headaches with the sensors
I think it is going to go for a second opinion.. i'll see if I can locate a specialist around Manchester

Thanks appreciate all the input

 

[The Sat Diver]

Hear what your saying Eric but I have already replaced the battery shortly before I came away and drove around for about 3 days and it made no difference to the way it had behaved previously... but again you have jogged my memory.. at one point I had lifted the car on the suspension after the warnings had come on and it wouldn't go back down no matter what I tried... so I just left it parked overnight and next day it was in the same state but when I started the engine it came down to normal ride height... warnings still came back tho' ... darn frustrating Cheers

 

[BlackC55]

I feel that I should butt in here and give some answers to some questions.

EIS is the electronic ignition switch

Rodeo is a setting used on the Mercedes diagnostic machine to remove the air from the system and to warm up the Pentosin oil that the system runs on. The Rodeo is used whe the system has been opened, pipe replaced etc.

If there is a warning message appearing in your cluster there is a problem. Dealers will avoid doing anything on these systems as they are complicated and time consuming and will probably loose them money in labour.

ANY leaks need to be fixed. If the system can't run at the required pressure190-200 bar. If the pump/pipework is leaking it does need to be fixed. The pipework can be complicated to replace, timeconsuming and therefore expensive. The most common problem with them are the sensors on the spheres faulting and causing the system not to pressurise as it should because of a fault prsent (shown on cluster). Also the "suction resrictor valve" on the pump faults. This valve is unavailable seperatly so a pump has to be replaced.

The individual struts can collapse and throw the car to the floor. When they do 24hrs of them in the sunk position is all you have before they are beyond repair.

The struts have a non return valve on the piework to them that keeps the ride height when the car is switched off. Unless they go wrong.......

A diagnostic check normally brings up some fault codes but the live data needs to be analysed and that normally gives away the problem.

I have been on the MB course for ABC and I used to get all the ABC faults when I worked at a dealer. If you were near no me I would love to have a look at it.

I hope this answers some questions.

 

[eric242340]

I feel that I should butt in here and give some answers to some questions.

EIS is the electronic ignition switch

Rodeo is a setting used on the Mercedes diagnostic machine to remove the air from the system and to warm up the Pentosin oil that the system runs on. The Rodeo is used whe the system has been opened, pipe replaced etc.

If there is a warning message appearing in your cluster there is a problem. Dealers will avoid doing anything on these systems as they are complicated and time consuming and will probably loose them money in labour.

ANY leaks need to be fixed. If the system can't run at the required pressure190-200 bar. If the pump/pipework is leaking it does need to be fixed. The pipework can be complicated to replace, timeconsuming and therefore expensive. The most common problem with them are the sensors on the spheres faulting and causing the system not to pressurise as it should because of a fault prsent (shown on cluster). Also the "suction resrictor valve" on the pump faults. This valve is unavailable seperatly so a pump has to be replaced.

The individual struts can collapse and throw the car to the floor. When they do 24hrs of them in the sunk position is all you have before they are beyond repair.

The struts have a non return valve on the piework to them that keeps the ride height when the car is switched off. Unless they go wrong.......

A diagnostic check normally brings up some fault codes but the live data needs to be analysed and that normally gives away the problem.

I have been on the MB course for ABC and I used to get all the ABC faults when I worked at a dealer. If you were near no me I would love to have a look at it.

I hope this answers some questions.

I like to see someone is thinking, a good reply

 

[BlackC55]

Thanks. It just fact from previous knowlege.

 

[television]

just asking Black, I have a tiny leak on one strut, it does not drip but the underside is slightly wet, and the fluid does not go down, is this repairable or a new strut.

Thanks

 

[The Sat Diver]

OK.. at this juncture I am holding my head in my hands.. honestly this is just way way beyond me now... however I am well versed in all things non-return
since again these are common items I deal with

Pentosin oil... please do not tell me I have used an incorrect type... it was only a small amount I used in the ABC and P/Steer res.. but I actually topped up using normal Hydraulic Fluid... dreading the reply to this now...

Car has not shown any signs of going down on any corner either... bottom line is the leak has to be fixed!... but does the pump come with hoses already attached as a fixed item... or do the individual hoses have to be attached to the pump ?? if the latter... then i'm fairly confident the pump does not need replacing only the weeping hose

Thanks for the info Black55

 

[BlackC55]

just asking Black, I have a tiny leak on one strut, it does not drip but the underside is slightly wet, and the fluid does not go down, is this repairable or a new strut.

Thanks

New strut is needed. Leaks as far as I know cannot be repaied

 

[BlackC55]

OK.. at this juncture I am holding my head in my hands.. honestly this is just way way beyond me now... however I am well versed in all things non-return
since again these are common items I deal with

Pentosin oil... please do not tell me I have used an incorrect type... it was only a small amount I used in the ABC and P/Steer res.. but I actually topped up using normal Hydraulic Fluid... dreading the reply to this now...

Car has not shown any signs of going down on any corner either... bottom line is the leak has to be fixed!... but does the pump come with hoses already attached as a fixed item... or do the individual hoses have to be attached to the pump ?? if the latter... then i'm fairly confident the pump does not need replacing only the weeping hose

Thanks for the info Black55

The pump comes seperate to the hose's. The seals on the hoses can be replaced.

Get the seal replaced. It is a simple job.

 

[BlackC55]

If the pipe is leaking at the joint between the union and the pump. Its a seal. If it is leaking furthere down the pipe. Its a pipe.

Hope this is clear and If you are unsure please ask.

 

[television]

Sat Driver, there is one very good diagnostic outfit in Preston, this guy teaches the subject, there is also a good indie near you.

I will put up the details later

 

[The Sat Diver]

Thanks for all the help gentlemen.. computer server banned this forum so couldn't access at work anymore and now i'm on my way back there..!!

Good news is the pump is changed.. bad news is I still think I have a leaking hose or seal since I have started getting a "visit the workshop" message back only 2 weeks after getting all sorted.. so it will be back to the workshop when I get back to UK again

Once again thank you all for the input

Sat Diver